Pipe-cutter.



J.'R.LONG.

PIPE CUTTER.

APPLICATION FILED JULY 28,1911.

Patented Mar. 5, 1912.

JWM/rrr.

srns

JOHN R. LONG, OF EAST AKRON, OHIO.

PIPE-CUTTER.

Specification of Letters Patent.

Application filed July 28, 1911.

Patented Mar. 5, 1912.

Serial No. 641,134.

To all whom it may concern.

Be it known that I, JOHN R. Lone, citizen of the United States, residingat East Akron, in the county of Summit and State of Ohio, have inventedcertain new and useful Improvements in Pipe-Gutters, of which thefollowing is a specification.

My invention relates to improvements in pipe cutters, and particularlyupon the style of cutter originally shown and set forth in myapplication for Letters Patent of the United States, Ser. No. 613,608,all substantially as shown and described and particularly pointed out inthe claim.

In the accompanying drawings, Figure 1 is a sectional elevation of theinvention lengthwise axially, and Fig. 2 is a plan view thereof. Fig. 3is a perspective view of the inner cutter jaw, and Fig. 4 is a crosssection substantially on line ww, Fig. 1. Fig. 5 is a perspective of theinner j awholder or support.

In the construction above referred to and upon which this invention isan improvement the inner jaw support or holder 2 was recessed in itsbottom and front so as to provide room beneath and within the same forthe inner jaw 3, which rested directly upon the tapered shank of theouter jaw member 4, and the sleeve or yoke 5 was the same as shownherein, flaring slightly in the direction of said jaws and adapted tolock the parts 2 and 4 together in working relation as is now well knownin several wrenches patented by me. Likewise the screw 6 was engagedthrough a lengthwise threaded bore in the rear inner portion of holder 2and was rotarily confined in a socket in the heel of aw 3 as shownherein, the said jaw meanwhile having its support directly upon theshank of the lower jaw and its rotary cutter 0 at its top and front ofthe holder 2 as also in this case.

The difficulty as to the original construction thus generally describedwas that the jaw member 3 lay directly between the holder 2 and theshank 4, and that when the yoke was moved forward upon the parts toworking position and the cutter was put at work the slack both above andbelow the member 3 not only had to be taken up but there was a tendencyto tilt down and bind at the front of said parts with the effect thatthe said jaw 3 would become locked and could not be operated by screw 6.Now, by my construction, I have effectually overcome and remedied thisobjection by providing the supporting member 2 with a lengthwise cavityor recess 7 which is oblong in cross section with flat sides and of thesame proportions its full depth to receive the shank or body of the jawmember 3. It will be noticed that the said jaw member projects abouttwo-thirds its length into said cavity and that the bottom wall 8 ofsaid cavity is part of the jawholder and is flat on its outside and liesdirectly upon the flat edge of outer jaw member 4. It follows that thesaid jaw 3 is not in anywise afiected by the action of the yoke upon theparts 2 and 4, and that it is equally free to slide back and forth atall times regardless of whether the yoke is locked or loose. This makesthe said jaw 3 responsive to the adjusting screw 6 by which it isadvanced as the cutting of the pipe progresses and while parts 2 and 4are firmly and fixedly yoked together. The front end of jaw 4 is curvedupward and carries two cutters c and c at different elevations and so asto come respectively above and below the advancing cutter 0.

It is also to be observed that in the present construction therespective outer edges of the main jaw and the slidable jawholder arerounded in cross section, as is also the yoke to match, as clearly seenin Fig. 4, and which is material in contributing to the overcoming ofthe tendency of theflat or angular edges heretofore used to become boundand locked together. As to this it should be understood that there is adisposition in the construction to wedge so tightly within the yoke thatoften it is diflicult to separate the parts, and the present roundedformation is therefore material and of the essence of the presentinvention because it practically eliminates this objection while it isnone the less quick and effective in producing the temporary lockingrequired. 7

A detaining screw 9 engages through yoke 5 into a slotor recess 10 inthe side of the slidable member 2.

The threaded bore for screw 6 in jaw- 12 carrying the cutters c and 0and the slidable member 2 being tapered reversely or rearwardly.

What I claim is:

A pipe cutter having fixed and movable jaws respectively provided eachwith a rotary cutter and a slidable holder for the inner of said jawshaving a recess lengthwise in its bottom open from the front and inwhich said inner jaw is adjustable, the said fixed jaw and the saidslidable holder being tapered in opposite directions along their Copiesof this patent may be obtained for outer edges, a yoke confining saidparts in operative relations and a handle threaded lengthwise throughthe lower portion of said 15 I slidable holder and rotatably locked inthe said slidable jaw.

In testimony whereof I affix my signature five cents each, by addressingthe Commissioner of Patents, 1 Washington, I). G.

